<template>
  <div class="person">
    <h1>情况五：监视上述多个数据</h1>
    <h2>姓名：{{ person.name }}</h2>
    <h2>年龄：{{ person.age }}</h2>
    <h2>汽车：{{ person.car.c1 }}、{{ person.car.c2 }}</h2>
    <button @click="changeName">修改名字</button>
    <button @click="changeAge">修改年龄</button>
    <button @click="changeC1">修改第一台车</button>
    <button @click="changeC2">修改第二台车</button>
    <button @click="changeCar">修改整个车</button>
    <hr>

  </div>
</template>

<script setup lang="ts" name="Person">
  import { reactive, watch } from "vue";
  // 数据
  let person = reactive({
    name: '张三',
    age: 18,
    car: {
      c1: '奔驰',
      c2: '宝马'
    }
  })


  // 方法
  function changeName() {
    person.name += '~'
  }
  function changeAge() {
    person.age += 1
  }
  function changeC1() {
    person.car.c1 = '奥迪'
  }
  function changeC2() {
    person.car.c2 = '大众'
  }
  function changeCar() {
    person.car = { c1: '雅迪', c2: '爱玛' }
  }

  //监视情况五：多个值  写函数（开启深度监视）：
  watch([() => person.name, () => person.car], (newVal, oldVal) => {
    console.log('person.car变化了', newVal, oldVal)
  }, { deep: true })


</script>
<style scoped>
  .person {
    width: 100%;
    background-color: skyblue;
    box-shadow: 0px 1px 2px #ddd;
    border-radius: 10px;
    padding: 20px;
  }

  button {
    margin: 0 5px;
  }

  li {
    font-size: 20px;
  }
</style>
